Mining-drill



C. BIERNAT.

MINING DRILL.

APPLICATION HLED MAY 8. 1920.

1.,354,944, Patented Oct. 5, 1920.

C. BIERNAT.

MINING DRILL.

lou man MAY |920.. 1,354,944, Patented 001:55, 1920.V

, MEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

CARL BIERNAT, OF GLAS-FORD. ILLINOIS.

i MINING-DRILL.

Application filed May 8,

To all whom t may concern Be. it known that l, CARL BinnNAT, a citizen of Poland, residing at Glasford, in the county of Peoria and State of Illinois, have invented certain new and useful Improvements in Mining-Drills, of which the following is a specification.

"lhe primary object of the invention is the provision of a hand operated drilling device adapted for drilling blast holes and the like, the device being simple and strong in construction, readily operable by a single workman and requiring but slight attention or adjustment.

il further object of the invention is the provision of a drilling machine that is readily taken apart for repairs as well as disassembled forchanging the position of the machine from one place to another, provision being made for driving a bit substantially horizontally While lubricating means and driving connections are also provided.

lVith these general obg'ects in view the invention consists in the novel form, combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings like reference characters indcate corresponding parts throughout the several views, and

Figure 1 is a top plan view of the invention with a bit positioned for use and parts broken away,

F ig. 2 is a side elevation thereof with the crank removed,

l? ig. 3 is a vertical longitudinal sectional view taken upon line Ill-lll of Fig. 1,

Fig. l is a front elevation of the same,

Figs. 5 and 6 are vertical transverse sectional views taken upon lines 1.7*V and lll-Vl respectively of Fig. 1, and

Fig. 7 is an elevational View of the attaching end of the crank.

Referring more in detail to the drawings, my invention broadly comprises a horizontally arranged cylinder consisting of two parts 10 and 11 connected together by hinges 12, an operating' screw 13 longitudinally positioned through the cylinder and adapted for operation in the manner hereinafter set forth whereby a bit 14 detachably mounted upon either end or shank 15 of the screw may be driven into and removed from the work. A gear 16 has a hub Specification of Letters Patent.

1920. Serial N0. 379,824.

17 journaled in the forward end of the bore 18 of the cylinder while a flange 19 upon the hub revolves in an annular groove 20 of the bore 18. In this manner, the gear 16 is Journaled upon the forward end of the cylinder when the sections 10 and 11 thereof are closed, a retaining latch 21 being provided for normally maintaining said sections in closed relations. A forward ei;- tension 22 of the gear 16 is journaled in a saddle 23 of the front support 24tof the device while a rear support 25 supports the rear end of the cylinder by means of lugs 26 projecting from the section 11 being seated in the heads 27 of the rear support 25.

A shaft 28 projects from one side of the cylinder section 11 being suitably connected thereto as by the swivel 29, a sleeve 30 being journaled upon the shaft 28 with a pinion 3l in constant mesh with the gear 16. A head 32 upon the outer end of the shaft 28 retains the sleeve 30 thereon while a lubricating port 33 through the sleeve 30 is normally closed by a spring pressed cap 34C.

rllhe screw 13 being threaded through the lireaded port-ion 35 of the cylinder bore, the operation of boring by means of the bit 14e will be at once apparen. A crank 36 is adapted for detachable connection with the sleeve 30, spaced circular openings 37 and 38 being provided through the crank so that the latter is easily positioned upon the sleeve 30. A recess 39 in the sleeve 30 has an entrance slot i0 at the end of the sleeve per- .p mitting an inwardly projecting rib l1 carried by the handle 36 within the openings thereof to be slidably positioned through the slot 410 into the recess 39 for engaging the rib 1-1 with either of the opposite walls l2 of said recess when turning the crank 36 for revolving the said sleeve 30. The sleeve 30 and its pinion 31 are revolverL in this manner in either direction desired by means of the crank 36, the gear 16 being turned by said pinion 31 which feeds the screw 13 through the threaded bore 35 of the cylinder 10, carrying the bit 14- rotarily into the work during the boring operation while a reverse movement of the crank 36 withdraws the bit 14. The shank 15 upon either end of the screw 13 may be employed for mounting a bit thereon while it will be apparent that any assuring-means desired may be ernployed for detachably holding the bit 14 thereto, Securing means for the sections when V ployed.

.bore 18 inwardly of the hub 1T receives lubricating grease :tor the screw 18 whenV the too section l0 of the c linder is o aened. Y .1 l, Y. l While the form oi the invention herein set forth is believed to he the preferable embodnnent thereof, it Vwill nevertheless be understood that minor changes Vmay be made.v

therein without departing from the spirit and scope of my invention.

Vilhat l claim as new is 1. A drill comprising a cylinder having a lower section and an upper section hinged closed, aV gear journaled at one end or' the cylinder adapted for removal when the cylinder is open, a support having a saddle portion adapted for journaling the hub of the gear therein when the device is assembled, another support at the opposite end of the lower section, and an operating screw vslidahle through" the gear and threaded throuoh the cylinder.

2. fr drill-comprising a cylinder havingV a lower section and an upper section-hinged thereto, securing means for the sections when closed, a gear journaled at one end et the cylinder adapted for removal when the cylinder is open, a support having a saddle portion adapted for journaling the hub of the gear therein when the device is assembled, another support at the opposite end of the Ilower section having bit receiving Shanks at its opposite ends, a sleeve jouinaled at right angles to the lower section of the. cylinder, a pinion upon said sleeve meshingl with sai'd gear, and a removable operating crank for the sleeve.

. 3. 'A drilling machine comprising a twopart cylinder, a screw axially threaded therethrough with abit receiving shanl; at each end thereof, a gear having a hub portion journaled in the cylinderandV also having an outer extension with a bore for the gear member through which said screw slidably extends, a. support iorone Vend ci the machine attached to Vone section of the cylinder, and a support for the opposite end of the machine in which theV extension ci the gear is seated for turning."

A drilling machine comprising'a two- Vpart cylinder, a screw axially threaded therethrough with a bit receiving shanl at each end thereof, a gear having a huh portion ournaled in the cylinder and also having an outer Vextension with a bore for the gear member through which said screw slidably extends, a support for one end 'o the machine attached to one sectionl of the cylinder, a support for the opposite end of the machine in which the extension of the gear isY seated for turning, a laterally projecting shaft swiveled to the lower section of the cylinder,a head upon the outer end of the shaft, a pinion having a hub in the form of a sleeve journaled upon the shaft with a lubricating port in the side thereof, the pinion being in mesh with the gear when the device is assembled for use, and operating means for the machine detachably connected to said hub of the pinion whereby the latter is adapted to revolve during operation.

ln testimony whereof l a'fiixrmy signature.

CARL Ernani-rr. 

